For a historical subsection,
choose a previous slot from the selection button below (the image above will not change) then click on the image above, or fill in the X, Y form below.
Previous Image

Alternatively: If you would like to consistently receive the same
area, enter a center X, Y coordinate. The origin (0,0) is in the upper
left hand corner of the image. Clear form if you wish to click on the
current image.